Reliabilt-window-mull-kit-instructions -

: You can find series-specific PDFs (e.g., Series 105 or 150) on the ReliaBilt Installation Support page .

: Lay the windows side-by-side on a flat surface. Use a utility knife to trim any excess vinyl "welds" or protruding edges from the corners where the windows will meet to ensure a flush fit. reliabilt-window-mull-kit-instructions

: Run a continuous bead of 100% silicone sealant along the entire length of the channel where the windows will connect. This step is critical for preventing air and water leaks. : You can find series-specific PDFs (e

: For a visual walkthrough, check out this guide on How to Mull Two Vinyl Windows Together . Window mullion installation #Lowes : Run a continuous bead of 100% silicone

Mulling is the process of joining two or more windows together to fit into a single large opening. If you are using a , the process involves preparing the frames, applying sealant, and securing the units with structural connectors. ReliaBilt Window Mull Kit Installation Steps